114 lines
2.9 KiB
C
114 lines
2.9 KiB
C
/*
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* Copyright (C) 2008 Martin Willi
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* HSR Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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/**
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* @defgroup ha_segments ha_segments
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* @{ @ingroup ha
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*/
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#ifndef HA_SEGMENTS_H_
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#define HA_SEGMENTS_H_
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#include <daemon.h>
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typedef struct ha_segments_t ha_segments_t;
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typedef uint16_t segment_mask_t;
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/**
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* maximum number of segments
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*/
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#define SEGMENTS_MAX (sizeof(segment_mask_t)*8)
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/**
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* Get the bit in the mask of a segment
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*/
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#define SEGMENTS_BIT(segment) (0x01 << (segment - 1))
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#include "ha_socket.h"
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#include "ha_tunnel.h"
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#include "ha_kernel.h"
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/**
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* Segmentation of peers into active and passive.
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*/
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struct ha_segments_t {
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/**
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* Implements listener interface to catch daemon shutdown.
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*/
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listener_t listener;
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/**
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* Activate a set of IKE_SAs identified by a segment.
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*
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* @param segment numerical segment to takeover, 0 for all
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* @param notify whether to notify other nodes about activation
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*/
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void (*activate)(ha_segments_t *this, u_int segment, bool notify);
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/**
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* Deactivate a set of IKE_SAs identified by a segment.
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*
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* @param segment numerical segment to takeover, 0 for all
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* @param notify whether to notify other nodes about deactivation
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*/
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void (*deactivate)(ha_segments_t *this, u_int segment, bool notify);
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/**
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* Handle a status message from the remote node.
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*
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* @param mask segments the remote node is serving actively
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*/
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void (*handle_status)(ha_segments_t *this, segment_mask_t mask);
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/**
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* Check if a given segment is currently active.
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*
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* @param segment segment to check
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* @return TRUE if segment active
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*/
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bool (*is_active)(ha_segments_t *this, u_int segment);
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/**
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* Return the number of segments
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*
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* @return number of segments
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*/
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u_int (*count)(ha_segments_t *this);
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/**
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* Destroy a ha_segments_t.
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*/
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void (*destroy)(ha_segments_t *this);
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};
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/**
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* Create a ha_segments instance.
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*
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* @param socket socket to communicate segment (de-)activation
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* @param kernel interface to control segments at kernel level
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* @param tunnel HA tunnel
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* @param count number of segments the cluster uses
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* @param node node, currently 1 or 0
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* @param monitor should we use monitoring functionality
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* @return segment object
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*/
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ha_segments_t *ha_segments_create(ha_socket_t *socket, ha_kernel_t *kernel,
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ha_tunnel_t *tunnel, u_int count, u_int node,
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bool monitor);
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#endif /** HA_SEGMENTS_ @}*/
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